以编程方式查找iPhone应用程序标识符前缀

Question

Is there any way to find the application identifier prefix in you iPhone application programmatically? Or even just to get the entire Application Identifier string?

I see you can find it by peeking into the "embedded.mobileprovision" file, but is there an easier way? (And I don't think that works if you're running in the simulator)

EDIT: Sorry, what I mean is the identifier PREFIX (10 characters). I've realized though that I don't actually need this, because the rest of the ID is guaranteed to be unique anyway.

Answer 1

The bundle id is stored in the Info.plist of the app bundle as St3fan specified, but you should not grope at the Info.plist directly. Instead, use:

[[NSBundle mainBundle] bundleIdentifier]

Answer 2

You can programmatically retrieve the Bundle Seed ID by looking at the access group attribute (ie kSecAttrAccessGroup ) of an existing KeyChain item. In the code below, I look up for an existing KeyChain entry and create one if it doesn't not exist. Once I have a KeyChain entry, I extract the access group information from it and return the access group's first component separated by "." (period) as the Bundle Seed ID.

+ (NSString *)bundleSeedID {
    NSDictionary *query = [NSDictionary dictionaryWithObjectsAndKeys:
                           kSecClassGenericPassword, kSecClass,
                           @"bundleSeedID", kSecAttrAccount,
                           @"", kSecAttrService,
                           (id)kCFBooleanTrue, kSecReturnAttributes,
                           nil];
    CFDictionaryRef result = nil;
    OSStatus status = SecItemCopyMatching((CFDictionaryRef)query, (CFTypeRef *)&result);
    if (status == errSecItemNotFound)
        status = SecItemAdd((CFDictionaryRef)query, (CFTypeRef *)&result);
    if (status != errSecSuccess)
        return nil;
    NSString *accessGroup = [(NSDictionary *)result objectForKey:kSecAttrAccessGroup];
    NSArray *components = [accessGroup componentsSeparatedByString:@"."];
    NSString *bundleSeedID = [[components objectEnumerator] nextObject];
    CFRelease(result);
    return bundleSeedID;
}

Answer 3

If I understand correctly you are looking for bundle identifier? if you you can get this way.

NSString* appID = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleIdentifier"];